mirror of https://github.com/minetest/minetest.git
135 lines
3.6 KiB
C++
135 lines
3.6 KiB
C++
/*
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Minetest Valleys C
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Copyright (C) 2016-2017 Duane Robertson <duane@duanerobertson.com>
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Copyright (C) 2016-2017 paramat
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Based on Valleys Mapgen by Gael de Sailly
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(https://forum.minetest.net/viewtopic.php?f=9&t=11430)
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and mapgen_v7 by kwolekr and paramat.
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Licensing changed by permission of Gael de Sailly.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#pragma once
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#include "mapgen.h"
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////////////// Mapgen Valleys flags
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#define MGVALLEYS_ALT_CHILL 0x01
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#define MGVALLEYS_HUMID_RIVERS 0x02
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// Feed only one variable into these.
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#define MYSQUARE(x) (x) * (x)
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#define MYCUBE(x) (x) * (x) * (x)
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class BiomeManager;
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class BiomeGenOriginal;
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// Global profiler
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//class Profiler;
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//extern Profiler *mapgen_profiler;
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struct MapgenValleysParams : public MapgenParams {
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u32 spflags = MGVALLEYS_HUMID_RIVERS | MGVALLEYS_ALT_CHILL;
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s16 large_cave_depth = -33;
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s16 massive_cave_depth = -256; // highest altitude of massive caves
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u16 altitude_chill = 90; // The altitude at which temperature drops by 20C.
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u16 lava_features = 0; // How often water will occur in caves.
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u16 river_depth = 4; // How deep to carve river channels.
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u16 river_size = 5; // How wide to make rivers.
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u16 water_features = 0; // How often water will occur in caves.
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float cave_width = 0.09f;
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NoiseParams np_cave1;
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NoiseParams np_cave2;
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NoiseParams np_filler_depth;
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NoiseParams np_inter_valley_fill;
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NoiseParams np_inter_valley_slope;
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NoiseParams np_rivers;
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NoiseParams np_massive_caves;
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NoiseParams np_terrain_height;
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NoiseParams np_valley_depth;
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NoiseParams np_valley_profile;
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MapgenValleysParams();
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~MapgenValleysParams() = default;
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void readParams(const Settings *settings);
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void writeParams(Settings *settings) const;
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};
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struct TerrainNoise {
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s16 x;
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s16 z;
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float terrain_height;
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float *rivers;
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float *valley;
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float valley_profile;
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float *slope;
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float inter_valley_fill;
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};
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class MapgenValleys : public MapgenBasic {
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public:
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MapgenValleys(int mapgenid, MapgenValleysParams *params, EmergeManager *emerge);
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~MapgenValleys();
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virtual MapgenType getType() const { return MAPGEN_VALLEYS; }
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virtual void makeChunk(BlockMakeData *data);
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int getSpawnLevelAtPoint(v2s16 p);
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s16 large_cave_depth;
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private:
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BiomeGenOriginal *m_bgen;
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bool humid_rivers;
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bool use_altitude_chill;
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float humidity_adjust;
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s16 cave_water_max_height;
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s16 lava_max_height;
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float altitude_chill;
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s16 lava_features_lim;
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s16 massive_cave_depth;
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float river_depth_bed;
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float river_size_factor;
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float *tcave_cache;
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s16 water_features_lim;
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Noise *noise_inter_valley_fill;
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Noise *noise_inter_valley_slope;
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Noise *noise_rivers;
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Noise *noise_cave1;
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Noise *noise_cave2;
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Noise *noise_massive_caves;
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Noise *noise_terrain_height;
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Noise *noise_valley_depth;
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Noise *noise_valley_profile;
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float terrainLevelAtPoint(s16 x, s16 z);
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void calculateNoise();
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virtual int generateTerrain();
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float terrainLevelFromNoise(TerrainNoise *tn);
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float adjustedTerrainLevelFromNoise(TerrainNoise *tn);
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virtual void generateCaves(s16 max_stone_y, s16 large_cave_depth);
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};
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